After more revealing videos and photos emerged, the controversy over the killing of eight undertrials (prisoner awaiting trial) has taken another turn.

New audio tapes emerged of a conversation between policemen that hints at the encounter being a pre-planned murder.

The audio clips accessed from the Madhya Pradesh police by news channel Aaj Tak show that the police allegedly chose to shot and kill the eight members of the banned Students Islamic Movement of India (SIMI) instead of arresting them.

Scroll down for video...

Congress party workers protest demanding judicial enquiry into the encounter of eight SIMI terrorists who escaped from jail, in Allahabad

In the audio tapes, a police officer can be heard instructing the cops engaged in the operation.

Police had claimed that the fugitives, who had allegedly escaped from the high-security Bhopal Central Jail that morning and killed a prison guard, had firearms.

Police at the encounter site at the hillocks of Acharpura village after the STF killed 8 SIMI

But the audio tapes do not suggest any exchange of fire, and instead hint at an operation completed in a few minutes. “Sigma Seven One: chaar paanch mar gaye hain. Unko goli lag gayi hai (Sigma Seven One, four-five are dead. They have been shot),” the tapes say.